CN201411973Y - Improved structure of safe puzzle lock - Google Patents

Abstract

An improved structure of safe coded lock, mainly comprising a bolt and a bolt control mechanism which are arranged in a lock shell; when the bolt is extended, a stop part at the inner side of the bolt is stopped by a lock bolt to be in a locking state, the lock bolt control mechanism can make the lock bolt in the lock bolt exit from the stop position to be in an unlocking state after a keyboard or a sensor inputs a correct password, and the lock bolt is driven and controlled by a motor and a spring, so that the bolt has the advantages of simple structure, easy assembly, cost reduction and better anti-theft effect.

Description

The improved structure of the combination lock of the treasury

technical field

The utility model relates to an improved structure of a combination lock for a treasury, in particular to an improved structure of a combination lock which utilizes an electronic code circuit to control the opening or closing of a lock bolt in a lock, wherein the lock bolt is driven and controlled by a motor and a spring. The utility model has the advantages of simple structure, easy assembly, reduced cost, and better anti-theft opening effect.

Background technique

General existing vault combination lock mechanism (as shown in Figure 1) comprises that a dead bolt (lock plate) 12 and an electromagnetic control mechanism 13 are installed in the lock housing 11 of described vault combination lock and is formed, and in dead bolt 12 When being rotated so that one end protrudes from the outside of the lock housing 11, the lock bolt (pillar or magnetic core) 131 of the electromagnetic control mechanism 13 must be ejected by a compression spring 133 to stop at the back of the stop portion 121 at the rear end of the dead bolt 12 , to prevent the dead bolt 12 from being rotated and unscrewed to be in a locked state; when unlocking, after the correct password is input by the operating keyboard or sensor (omitted in the figure) arranged on the outside of the safe, the electromagnetic coil 132 of the electromagnetic control mechanism 13 Excitation will be generated to make the lock bolt 131 shrink back and be in an unlocked state. At this time, the handle (omitted in the figure) on the front of the lockset is rotated to make the dead bolt 12 retract inwardly, and the vault door can be opened.

As above-mentioned existing vault combination lock mechanism, though wherein the password of electronic control circuit is difficult to crack and open, yet electromagnetic control mechanism 13 wherein is to utilize electromagnet principle, is provided with a locking bolt 131 in an electromagnetic coil 132 and can freely Telescopic movement, and a compression spring is provided at the rear end of the lock bolt to maintain the lock bolt 131 in the extended position, so as to achieve the effect of protruding upward and resisting the stopper portion 121 at the rear end of the dead bolt 12 at any time; secondly , the existing structure is based on the magnetic attraction effect generated when the electromagnetic coil 132 is energized, so as to drive the above-mentioned lock bolt 131 to shrink backward to achieve the purpose of unlocking.

As above-mentioned existing structure, its shortcoming is: among them utilize the electromagnet principle to control the mechanism that lock bolt 131 expands and contracts, mainly by the elastic force of an anti-compressive spring 133, make it can maintain outwards and be stuck in dead bolt 12 at ordinary times. The shape of the stop portion 121, and the elastic force is to allow the magnetic force of the electromagnetic coil 132 to easily retract the lock bolt 131 backward, so the elastic force of the anti-compression spring 133 is still limited; and has a magnetic attraction As a result, the lock bolt 131 must be made of iron metal, and its weight is relatively heavy; Large inertial kinetic energy breaks through the elastic force of the anti-compression spring 133 and automatically shrinks back to unlock, resulting in the possibility of stealing the safe in an abnormal manner and losing the proper anti-theft effect of the safe.

In order to improve the deficiency of the above-mentioned existing mechanism, the applicant of this case has previously proposed another anti-theft mechanism for the password lock of the treasury (application number: 97203354, as shown in Figure 2), which is to be provided with an anti-theft mechanism on the side of the electromagnetic control mechanism 21. Mechanism 22, when attempting to make the locking bolt 211 of electromagnetic control mechanism 21 shrink back by illegal means with gravitational impact mode and when stealing the safe, described an anti-theft mechanism 22 can produce an inertial power simultaneously, and the interlocking reaction is Protrude a pin 221 perpendicular to the moving direction of the lock bolt 211 to produce a braking effect on the lock bolt 211 of the electromagnetic control mechanism 21, in order to achieve the purpose of anti-theft opening; although this structure can effectively achieve the effect of anti-theft opening, but Wherein the structure of anti-theft mechanism 22 is comparatively complicated, and parts are many, and cost is high and does not have economic benefit. Therefore, to above-mentioned two kinds of existing treasury combination lock structures, really have the necessity of researching and developing improvement again.

The author of this case considers that there is still room and necessity for improvement to the above-mentioned existing structures in view of the above-mentioned two existing vault coded lock structures in use or production costs; Years of experience in the manufacture and design of the above-mentioned business have finally designed a new improved structure of the vault combination lock.

Contents of the invention

The main purpose of this utility model is to provide an improved structure of a vault combination lock, in which the lock bolt that stops the rotation of the lock tongue is driven by a motor to prevent illegal opening by impact, and can simplify the mechanism and facilitate assembly, reducing cost of efficacy.

In order to achieve the above-mentioned purpose, the improved structure of the vault combination lock described in the utility model mainly includes a dead bolt installed in the lock housing and a lock bolt control mechanism, and the lock bolt control mechanism includes a motor , a lock bolt and a return spring; wherein: the motor is fixed in the lock case, and is driven by the button or sensor on the front of the lock; the lock bolt is fixed on the axis of the motor and can rotate with the rotation of the axis of the motor Break away from the stop position behind the stopper corresponding to the lock tongue, or swing to the stop position behind the stopper by the reverse drive of the motor or/and the elastic force of the return spring; one end of the return spring is fixed on the lock case, and the other One end is fixed on the lock bolt, and when the motor reverses or loses power, the lock bolt can automatically return to the locking position corresponding to the rear of the stopper portion of the lock tongue.

When the above-mentioned structures are used in combination, when the vault door is closed and the deadbolt is stretched outwards, the lockbolt will automatically fall into the position behind the deadbolt stop part by the force of the return spring, so as to prevent the deadbolt from rotating. In order to be in a locked state; in addition, when the lock bolt control mechanism enters the correct password due to the external keyboard or sensor, it can conduct current to drive the motor to drive the lock bolt to rotate, and then the lock bolt exits the stop position and is unlocked state; therefore, the structure of the utility model is extremely simple and easy to assemble, which can reduce the manufacturing cost of the product; secondly, the movement mode of the lock bolt in the utility model is driven by the axis of the motor to rotate, rather than the general existing The lock bolt with the electromagnet mechanism is in the form of linear motion, so the structure of the utility model cannot be stolen by the impact method along the movement direction of the lock bolt, so that the anti-theft effect of the lockset can be improved.

Description of drawings

Fig. 1 is the plan combination drawing of an existing structure;

Fig. 2 is the plan combination drawing of another existing structure;

Fig. 3 is a plan combination diagram of a locked state of an embodiment of the present invention;

Fig. 4 is the three-dimensional exploded view of the locking bolt control mechanism in the utility model;

Fig. 5 is a plan combination diagram of an unlocked state of an embodiment of the present invention.

Explanation of reference signs: 11-lock housing; 12-bolt; 13-electromagnetic control mechanism; 121-stopper; 131-lock bolt; 132-electromagnetic coil; 133-compression spring; -anti-theft mechanism; 211-lock bolt; 221-insert pin; 31-lock housing; 32-bolt tongue; 33-lock bolt control mechanism; 321-stopper; 331-motor; .

Detailed ways

The above-mentioned and other technical features and advantages of the present utility model will be described in more detail below in conjunction with the accompanying drawings.

Please refer to Fig. 1 to Fig. 3 first, the improved structure of the vault combination lock shown in the present embodiment mainly comprises a dead bolt 32 and a lockbolt control mechanism 33 installed in the lock housing 31. A lock bolt control mechanism 33 includes a motor 331, a lock bolt 332 and a return spring 333; wherein the motor 331 is fixed in the lock housing 11, and the button or sensor on the front of the lockset (the existing structure, the drawing is omitted) ) to control the drive; the lock bolt 332 is fixed on the axis of the motor 331, and can rotate with the rotation of the axis of the motor to break away from the stop position corresponding to the stopper portion 321 of the dead bolt 32, or reversely driven by the motor 331 or /and the elastic force of the return spring 333 swings to the stop position behind the above-mentioned stop portion 321; one end of the return spring 333 is fixed on the lock housing 11, and the other end is fixed on the lock bolt 332, which can be used when the motor 331 reverses or loses power. The locking bolt 332 is automatically returned to the locking position corresponding to the rear of the stop portion 321 of the locking tongue 32 .

As in the above-mentioned structure, when the dead bolt 32 is stretched out, the lock bolt 332 automatically rotates into the position behind the dead bolt stopper 321 by the force of the return spring 333, so as to prevent the dead bolt 32 from rotating to lock. In addition, when the lock bolt control mechanism 33 enters the correct password through an external keyboard or sensor, the current can be turned on to make the motor 331 drive the lock bolt 332 to rotate, and then the lock bolt 332 is withdrawn from the stop position. It is in an unlocked state (as shown in Figure 5); therefore, the structure of the utility model is extremely simplified and easy to assemble, which can automatically reduce the manufacturing cost of the product.

Secondly, the movement mode of the lock bolt 332 in the utility model is driven by the forced power of the motor 331 to rotate, and its motion direction is in a non-linear state but a circular motion, which is not the type in which the lock bolt of the conventional electromagnet mechanism is a linear motion. state, so the structure of the utility model can no longer be used to steal along the direction of movement of the lock bolt 332 by impact; and, the lock bolt 332 of the utility model is not driven by magnetic force, so it can be made of lighter non-ferrous metal material (such as aluminum alloy), but can be driven by a small horsepower, and even if it is hit or knocked, it will not produce too much inertial force, so it is difficult to make the lock bolt 332 generate enough power to break through The power of the return spring 333 is rotated, so the mechanism of the present invention can perform locking and unlocking work with the simplest mechanism, and can improve the anti-theft effect of the lockset, thereby reducing costs and increasing market competitiveness.

The above description is only illustrative of the present utility model, rather than restrictive. Those of ordinary skill in the art understand that many modifications and changes can be made without departing from the spirit and scope defined by the following appended claims. , or equivalent, but all will fall within the protection scope of the present utility model.

Claims (2)

1. the improvement of national treasury coded lock structure mainly is made up of the dead bolt and the locking bolt controlling organization that are installed in the lock housing; It is characterized in that described locking bolt controlling organization includes a motor, a locking bolt and a resetting spring; Wherein:

Described motor is fixed within the lock housing, by the button or the inductor control driving in lockset front;

Described locking bolt is fixed on the axle center of described motor, rotates the stop position of disengaging corresponding to the rear, stopper section of dead bolt with the rotation of described axle center of motor, or orders about the stop position that it puts the rear, stopper section through the elastic force of described resetting spring;

Described resetting spring one end is fixed on the described lock housing, and the other end is fixed on the described locking bolt, makes described locking bolt automatically revert to locked position corresponding to the rear, stopper section of described dead bolt when described motor runs out of steam.

2. the improvement of national treasury coded lock according to claim 1 structure is characterized in that, described locking bolt is ordered about it and is returned to locked position corresponding to the rear, stopper section of described dead bolt by described motor counter-rotating.

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